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arXiv 1712.04574nucl-thnucl-ex
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探测丰中子物质中的质子跃迁动量

Probing proton transition momentum in neutron-rich matter

Gao-Chan Yong

备注：
5 pages, 5 figures
发表信息：
Phys.Lett. B776 (2018) 447-450
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摘要：

在核费米动量附近，核物质中核子动量分布n（k）存在一个跃迁，即，从常数到$1/k^{4}$核子动量分布。然而，目前对非对称物质中少数跃迁动量的研究很少，因而无法确定。在IBUU输运模型的框架下，首次研究了质子在核中的跃迁动量。结果表明，质子的跃迁动量对丰中子核反应中的$π^{-}/π^{+}$比和高能光子产生量都很敏感。这一结果将推动丰中子物质中质子动量分布的研究，有助于我们更好地理解丰中子核反应和中子星的动力学。

英文摘要：

Around the nuclear Fermi momentum, there is a transition of nucleon momentum distribution n(k) in nuclear matter, i.e., from a constant to the $1/k^{4}$ nucleon momentum distribution. While nowadays the transition momentum of minority in asymmetric matter is rarely studied and thus undetermined. In the framework of the IBUU transport model, proton transition momentum in nuclei is first studied. It is found that the transition momentum of proton is sensitive to the $π^{-}/π^{+}$ ratio as well as the energetic photon production in neutron-rich nuclear reaction. This result may push the study of how the proton momentum is distributed in neutron-rich matter forward and help us to better understand the dynamics of both neutron-rich nuclear reactions and neutron stars.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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